Jim Morgenthaler of Athens, Georgia judged the photography critique for the Roswell Photo society on July 12. I learned an important new skill during his comments. He said we should be using the Shadows/Highlights feature. Select the following from the main screen in Photoshop:
The window on the right pops up. Below, on the left below is a before picture. On the right is a photo that I adjusted and pulled the slider down to about 15%. This is plenty of highlights for most photographs. Notice you can now see the green underneath the flower (the shadow section).